Computer-related introductions in 1980

thumb|A twisted-pair cable as commonly used for Ethernet thumb|100px|Symbol used by Apple Inc.|Apple and [[Google on some devices to denote an Ethernet connection]] thumb|100px|Symbol recommended by Microsoft as part of the [[PC System Design Guide to denote an Ethernet connection]]

principal protocol used for transmission of datagrams across an IP network

thumb|upright=1.3|A 2004 discussion in the Usenet group comp.text.tex thumb|A diagram of Usenet servers and clients. The coloured dots on the servers represent the newsgroups they carry. Coloured arrows between servers indicate newsgroup content exchanges (news feeds). Arrows between clients and servers indicate that a user is subscribed to a certain newsgroup and reads or submits articles there.Notably, clients never connect with each other, but still have access to each other's posts even when they also never connect to the same server.

study of a model of computation

The VIC-20 (known as the VC-20 in Germany and the VIC-1001 in Japan) is an 8-bit entry level home computer that was sold by Commodore Business Machines. The VIC-20 was announced in September 1980, roughly three years after Commodore's first personal computer, the PET. The VIC-20 was the first computer of any description to sell one million units, eventually reaching 2.5 million. It was described as "one of the first anti-spectatorial, non-esoteric computers by design...no longer relegated to hobbyist/enthusiasts or those with money, the computer Commodore developed was the computer of the futu

computer made by Apple

dual-ported variant of dynamic RAM

The Sinclair ZX80 is a home computer launched on 29 January 1980 by Science of Cambridge Ltd. (later to be better known as Sinclair Research). It was one of the first computers available in the United Kingdom for less than a hundred pounds. It was available in kit form for £79.95, where purchasers had to assemble and solder it together, and as a ready-built version at £99.95.

floating-point unit for the Intel 8086 series of microprocessors

Character set of the original IBM PC

x87 is a floating-point-related subset of the x86 architecture instruction set. It originated as an extension of the 8086 instruction set in the form of optional floating-point coprocessors (FPU) that work in tandem with corresponding x86 CPUs. These microchips have names ending in "87". This is also known as the NPX (numeric processor extension). Like other extensions to the basic instruction set, x87 instructions are not strictly needed to construct working programs, but provide hardware and microcode implementations of common numerical tasks, allowing these tasks to be performed much faster

line of home computers

right|thumb|Seagate ST506 5¼-inch HDD with cover removed thumb| 2.5" 6495 MB IDE drive next to a 5.25" full-height 111 MB MFM drive

early 1980s home computer

personal computer released by IBM in February 1980

1980s-era user programmable calculator-sized computer

home computer

Processor card for the Apple II

pocket computer

character encoding standard

early home computer from Belgium

home computer that used to be made by Philips

The IMKO-1 ( (ИМКО-1), , Individual micro computer) was the first Bulgarian personal computer, built in 1979 in Pravetz, Bulgaria. It was the first in the Pravetz series 8 range of computers. As the other computers in the series, it is an Apple II clone.